Teegarden’s Star revisited: a nearby planetary system with at least three planets
The two known planets in the planetary system of Teegarden’s Star are among the most Earth-like exoplanets currently known. Revisiting this nearby planetary system with two planets in the habitable zone aims at a more complete census of planets around very low-mass stars. A significant number of new...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
April 2024
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| In: |
Astronomy and astrophysics
Year: 2024, Jahrgang: 684, Pages: 1-19 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202348033 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1051/0004-6361/202348033 Verlag, kostenfrei, Volltext: https://www.aanda.org/articles/aa/abs/2024/04/aa48033-23/aa48033-23.html 
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| Verfasserangaben: | S. Dreizler, R. Luque, I. Ribas, V. Koseleva, H.L. Ruh, E. Nagel, F.J. Pozuelos, M. Zechmeister, A. Reiners, J.A. Caballero, P.J. Amado, V.J.S. Béjar, J.L. Bean, M. Brady, C. Cifuentes, M. Gillon, A.P. Hatzes, Th Henning, D. Kasper, D. Montes, J.C. Morales, C.A. Murray, E. Pallé, A. Quirrenbach, A. Seifahrt, A. Schweitzer, J. Stürmer, G. Stefánsson, and J.I. Vico Linares |
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| 245 | 1 | 0 | |a Teegarden’s Star revisited |b a nearby planetary system with at least three planets |c S. Dreizler, R. Luque, I. Ribas, V. Koseleva, H.L. Ruh, E. Nagel, F.J. Pozuelos, M. Zechmeister, A. Reiners, J.A. Caballero, P.J. Amado, V.J.S. Béjar, J.L. Bean, M. Brady, C. Cifuentes, M. Gillon, A.P. Hatzes, Th Henning, D. Kasper, D. Montes, J.C. Morales, C.A. Murray, E. Pallé, A. Quirrenbach, A. Seifahrt, A. Schweitzer, J. Stürmer, G. Stefánsson, and J.I. Vico Linares |
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| 520 | |a The two known planets in the planetary system of Teegarden’s Star are among the most Earth-like exoplanets currently known. Revisiting this nearby planetary system with two planets in the habitable zone aims at a more complete census of planets around very low-mass stars. A significant number of new radial velocity measurements from CARMENES, ESPRESSO, MAROON-X, and HPF, as well as photometry from TESS motivated a deeper search for additional planets. We confirm and refine the orbital parameters of the two know planets Teegarden’s Star b and c. We also report the detection of a third planet d with an orbital period of 26.13 ± 0.04 days and a minimum mass of 0.82 ± 0.17 <i>M<i/><sub>⊕<sub/>. A signal at 96 days is attributed to the stellar rotation period. The interpretation of a signal at 172 days remains open. The TESS data exclude transiting short-period planets down to about half an Earth radius. We compare the planetary system architecture of very low-mass stars. In the currently known configuration, the planetary system of Teegarden’s star is dynamically quite different from that of TRAPPIST-1, which is more compact, but dynamically similar to others such as GJ 1002. | ||
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| 700 | 1 | |a Ribas, I. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Koseleva, V. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ruh, H. L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Nagel, E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pozuelos, F. J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zechmeister, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Reiners, A. |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Gillon, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hatzes, A. P. |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Morales, J. C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Murray, C. A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pallé, E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Quirrenbach, Andreas |e VerfasserIn |0 (DE-588)112240623 |0 (DE-627)593634780 |0 (DE-576)304098167 |4 aut | |
| 700 | 1 | |a Seifahrt, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schweitzer, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Stürmer, Julian |e VerfasserIn |0 (DE-588)1068239018 |0 (DE-627)819823244 |0 (DE-576)427495105 |4 aut | |
| 700 | 1 | |a Stefánsson, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Linares, J. I. Vico |e VerfasserIn |4 aut | |
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